Spiral Wound Flange Gasket For Flange ANSI Class 150 For Pipe Size 3 in Inside Diameter 4 in Outside Diameter 5 3/8 in Thickness 3/16 in Rim Stripe Color Gray Outside Rim Color Yellow Filler Material Graphite Outer Ring Material Carbon Steel Minimum Operating Temperature -320 Degrees F Maximum Operating Temperature 850 Degrees F Spiral Winding Material Stainless Steel Spiral Winding Stainless Steel Grade 304 Inner Ring Material None Inner Ring Stainless Steel Grade Not Applicable